For a DIY project: Disconnect the return line of the transmission cooler at the radiator. Attach a piece of hose to the radiator connection and put the other end in a 5 gallon bucket. Remove the trans dip stick and insert a funnel. Then start the engine and start pouring new trans fluid in the funnel. Do this until bright red fluid starts coming out of the hose in the bucket. Needless to say this works best with two people. Reconnect line and check trans fluid level with dipstick. This method changes the fluid in the torque converter also.
if the transmission fluid has never been changed before and has over 100k on it the flush is not recommended. if transmission has been serviced regularly with filter changed then should have no problems
For all the nay-sayers that will tell you not to flush the tranny "EVER", disregard them. My 1983 Ford F-150, 4 X 4, has had the trans filter replaced every 100,000 miles. It's been flushed every 50,000 miles, between filter changes. It was built in Nov. 1982, so it's old. It has 367,000 miles on it. I had the trans rebuilt for the only time, last spring, with 345,000 miles on it. I've dragged boats for 20 years and a dual axle trailer at least 4 days a week for almost 4 years.
Jerry has the perfect DIY solution, just be sure to have enough new fluid when you start. The auto parts stores sell it by the gallon and that would be helpful.
I have mine done at the shop for about $90.
NEVER HAVE IT DONE! You get no new transmission filter and all the dirty crap blows through the valve body.
Can someone explain the procedure?
